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Fair Value Measurements and Financial Instruments - Additional Information (Detail) € in Millions	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2025 USD ($)	Sep. 30, 2024 USD ($)	Sep. 30, 2025 USD ($)	Sep. 30, 2024 USD ($)	Sep. 30, 2026 USD ($)	Sep. 30, 2025 EUR (€)	Dec. 31, 2024 USD ($)	Dec. 31, 2024 EUR (€)	Mar. 31, 2022 USD ($)
Derivatives, Fair Value [Line Items]
Carrying amount of our investments without readily determinable fair values	$ 714,000,000		$ 714,000,000				$ 724,000,000
Cumulative adjustments due to observable price changes	191,000,000		191,000,000
Cumulative adjustments due to impairment charges	141,000,000		141,000,000
Initial value of the excluded component									$ 1,000,000,000
Derivative asset fair value of collateral	0		0				0
Derivative liability fair value of collateral	1,100,000,000		1,100,000,000				2,100,000,000
Scenario, Forecast \| Interest Expense
Derivatives, Fair Value [Line Items]
Excluded component estimated to be amortized into interest expense					$ 87,000,000
Euro Denominated Debt \| Net Investment Hedges
Derivatives, Fair Value [Line Items]
Notional amount \| €						€ 750		€ 750
Interest rate swaps
Derivatives, Fair Value [Line Items]
Notional amount	23,040,000,000		23,040,000,000				24,025,000,000
Interest rate swaps \| Fair Value Hedges \| Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Notional value settled	0	$ 1,254,000,000	985,000,000	$ 1,254,000,000
Pre-tax gain (loss) recognized in Other income, net and Interest expense	0	(2,000,000)	0	1,000,000
Cross currency swaps
Derivatives, Fair Value [Line Items]
Pre-tax gain (loss) recognized in Other income, net and Interest expense	0	0	0	0
Notional amount	32,177,000,000		32,177,000,000				32,053,000,000
Cross currency swaps \| Fair Value Hedges \| Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Notional value settled	995,000,000	0	2,170,000,000	3,619,000,000
Excluded component estimated to be amortized into interest expense	(191,000,000)	(573,000,000)	(1,068,000,000)	(407,000,000)
Cross currency swaps \| Fair Value Hedges \| Interest Expense \| Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Excluded component estimated to be amortized into interest expense	23,000,000	$ 23,000,000	70,000,000	$ 73,000,000
Treasury rate locks \| Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Notional amount	$ 6,000,000,000		$ 6,000,000,000				$ 0